/* =========================================================
   LIGNUM — WOOD LIBRARY FINAL + CLASSIC CHAT BANNER
   ========================================================= */

:root{
  --paper:#efe1cf;
  --paper-deep:#e2cfb9;
  --ink:#4f3727;
  --ink-soft:rgba(79,55,39,.82);
  --ink-faint:rgba(79,55,39,.56);
  --line:rgba(92,67,47,.20);
  --line-strong:rgba(92,67,47,.34);
  --topbar:#4e2f23;
  --topbar-line:#8e6549;
  --shadow:0 10px 24px rgba(54,34,22,.10);

  --max:1200px;
  --pad-x:clamp(18px, 4vw, 42px);
  --section-gap:clamp(44px, 6vw, 78px);

  --font-display:"Cormorant Garamond","Noto Serif KR",serif;
  --font-body:"Noto Serif KR","Cormorant Garamond",serif;
}

*,
*::before,
*::after{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{
  display:block;
  max-width:100%;
}

a{
  color:inherit;
  text-decoration:none;
}

button{
  font:inherit;
}

/* =========================================================
   PAPER OVERLAY
   ========================================================= */
.paperOverlay{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:url("/assets/woods/paper-grain-base.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
  mix-blend-mode:multiply;
}

.wlPage,
.wlTopbar,
.wlFooter{
  position:relative;
  z-index:1;
}

/* =========================================================
   TOPBAR
   ========================================================= */
.wlTopbar{
  background:
    linear-gradient(to bottom, rgba(0,0,0,.10), rgba(0,0,0,.08)),
    var(--topbar);
  border-bottom:1px solid var(--topbar-line);
  box-shadow:0 1px 0 rgba(255,255,255,.05) inset;
}

.wlTopbarInner{
  width:min(100%, var(--max));
  margin:0 auto;
  padding:14px var(--pad-x);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.wlBrand{
  display:inline-flex;
  align-items:center;
}

.wlBrandLogo{
  height:34px;
  width:auto;
  display:block;
}

.wlNav{
  display:flex;
  align-items:center;
  gap:28px;
}

.wlNav a{
  font-family:var(--font-display);
  font-size:1rem;
  letter-spacing:.05em;
  color:rgba(255,239,223,.86);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:opacity .18s ease, border-color .18s ease;
}

.wlNav a:hover{
  opacity:.78;
}

.wlNav a.is-current{
  border-bottom-color:rgba(255,239,223,.6);
}

/* =========================================================
   HERO
   ========================================================= */
.wlHero{
  position:relative;
  width:100%;
  margin:0;
}

.wlHeroMedia{
  position:relative;
  width:100%;
  min-height:clamp(420px, 58vw, 820px);
  max-height:none;
  overflow:hidden;
}

.wlHeroImage{
  width:100%;
  height:clamp(420px, 58vw, 820px);
  object-fit:cover;
  object-position:center 45%;
  filter:sepia(.14) saturate(.72) brightness(.86);
}

.wlHeroMedia::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(to bottom, rgba(32,20,12,.18), rgba(32,20,12,.28)),
    linear-gradient(to top, rgba(32,20,12,.30), rgba(32,20,12,.06));
}

.wlHeroOverlay{
  position:absolute;
  left:50%;
  top:52%;
  transform:translate(-50%, -50%);
  width:min(100%, 980px);
  padding:0 24px;
  text-align:center;
  color:#e7d1b8;
}

.wlHeroKicker{
  margin:0 0 10px;
  font-size:.88rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:rgba(231,209,184,.82);
}

.wlHeroTitle{
  margin:0;
  font-family:var(--font-display);
  font-size:clamp(2.6rem, 6.8vw, 6rem);
  line-height:.96;
  font-weight:600;
  letter-spacing:.02em;
  text-shadow:0 2px 8px rgba(0,0,0,.22);
}

.wlHeroDivider{
  width:min(100%, 460px);
  height:1px;
  margin:18px auto 16px;
  background:linear-gradient(to right, transparent, rgba(231,209,184,.74), transparent);
  position:relative;
}

.wlHeroDivider::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:7px;
  height:7px;
  border-radius:50%;
  background:rgba(231,209,184,.8);
  transform:translate(-50%, -50%);
}

.wlHeroSubtitle{
  margin:0;
  font-family:var(--font-display);
  font-size:clamp(1.15rem, 2.2vw, 2rem);
  color:rgba(231,209,184,.95);
}

/* =========================================================
   SECTIONS
   ========================================================= */
.wlSection{
  width:min(100%, var(--max));
  margin:0 auto;
  padding:0 var(--pad-x);
}

.wlSectionDivider{
  width:100%;
  height:1px;
  margin:0 auto 34px;
  background:linear-gradient(to right, transparent, var(--line-strong), transparent);
}

.wlIntro{
  padding-top:28px;
}

.wlSectionBody--narrow{
  max-width:900px;
  margin:0 auto;
}

.wlIntroLead{
  margin:0;
  text-align:center;
  font-family:var(--font-display);
  font-size:clamp(1.75rem, 3.1vw, 3.1rem);
  line-height:1.7;
  color:var(--ink-soft);
}

.wlIntroLead span{
  display:block;
}

.wlArchive{
  padding-top:42px;
}

.wlArchiveHead{
  margin-bottom:26px;
}

.wlSectionTitle{
  margin:0;
  text-align:center;
  font-family:var(--font-display);
  font-size:clamp(2.2rem, 3vw, 3.2rem);
  letter-spacing:.03em;
  color:var(--ink);
}

/* =========================================================
   ARCHIVE GRID
   ========================================================= */
.wlArchiveGrid{
  display:grid;
  grid-template-columns:minmax(0, 1fr) minmax(320px, 420px);
  gap:38px;
  align-items:start;
}

/* =========================================================
   SPECIMEN PANEL
   ========================================================= */
.wlSpecimenPanel{
  min-width:0;
}

.wlSpecimenFigure{
  margin:0;
  padding:18px;
  border:1px solid rgba(112,83,60,.28);
  background:rgba(255,255,255,.08);
  box-shadow:var(--shadow);
}

.wlSpecimenImage{
  width:100%;
  height:auto;
  border:1px solid rgba(112,83,60,.22);
  background:#ead9c1;
}

/* =========================================================
   INDEX PANEL
   ========================================================= */
.wlIndexPanel{
  display:flex;
  flex-direction:column;
  gap:22px;
  padding-top:8px;
  min-height:100%;
}

.wlIndexList{
  display:flex;
  flex-direction:column;
}

.wlIndexItem{
  appearance:none;
  border:0;
  border-top:1px solid var(--line);
  background:transparent;
  text-align:left;
  padding:18px 0 17px;
  color:var(--ink);
  cursor:pointer;
  transition:opacity .22s ease, transform .22s ease, background .22s ease;
}

.wlIndexItem:last-child{
  border-bottom:1px solid var(--line);
}

.wlIndexItem:hover:not(.is-locked){
  transform:translateX(3px);
}

.wlIndexMain{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
}

.wlIndexName{
  font-family:var(--font-display);
  font-size:clamp(1.7rem, 2.2vw, 2.3rem);
  line-height:1;
}

.wlIndexStatus{
  font-size:.96rem;
  color:var(--ink-faint);
}

.wlIndexMeta{
  display:block;
  margin-top:5px;
  font-size:1rem;
  color:var(--ink-soft);
}

.wlIndexItem.is-active{
  padding-left:14px;
  padding-right:14px;
  background:rgba(83,57,40,.10);
  box-shadow:inset 0 0 0 1px rgba(83,57,40,.10);
}

.wlIndexItem.is-locked{
  cursor:default;
  opacity:.54;
}

/* =========================================================
   RECORD LINK
   ========================================================= */
.wlRecordLinkWrap{
  display:flex;
  justify-content:flex-end;
  margin-top:auto;
  padding-top:22px;
}

.wlRecordLink{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:0;
  border:0;
  background:transparent;
  box-shadow:none;
  font-family:var(--font-display);
  font-size:1.28rem;
  color:var(--ink);
  line-height:1.2;
  transition:opacity .18s ease;
}

.wlRecordLink::after{
  content:"›";
  margin-left:2px;
  font-size:1em;
}

.wlRecordLink:hover{
  opacity:.68;
}

/* =========================================================
   NOTES
   ========================================================= */
.wlNotes{
  padding-top:40px;
  padding-bottom:52px;
}

.wlNotesGrid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.wlNoteItem{
  padding:20px 20px 24px;
  min-height:150px;
}

.wlNoteItem + .wlNoteItem{
  border-left:1px solid var(--line);
}

.wlNoteTitle{
  margin:0 0 10px;
  text-align:center;
  font-family:var(--font-display);
  font-size:clamp(1.8rem, 2.4vw, 2.5rem);
  font-weight:600;
}

.wlNoteText{
  margin:0;
  text-align:center;
  font-size:1.02rem;
  color:var(--ink-soft);
}

/* =========================================================
   FOOTER
   ========================================================= */
.wlFooter{
  background:
    linear-gradient(to bottom, rgba(0,0,0,.10), rgba(0,0,0,.10)),
    var(--topbar);
  color:#e8d6c1;
  border-top:1px solid var(--topbar-line);
}

.wlFooterInner{
  width:min(100%, var(--max));
  margin:0 auto;
  padding:34px var(--pad-x) 40px;
}

.wlFooterBrand{
  font-family:var(--font-display);
  font-size:1.4rem;
  margin-bottom:18px;
}

.wlFooterInfo,
.wlFooterLinks{
  display:grid;
  gap:7px;
  font-size:.96rem;
}

.wlFooterLinks{
  margin-top:18px;
}

.wlFooter a{
  color:rgba(232,214,193,.92);
}

.wlFooterCopy{
  margin-top:20px;
  font-size:.9rem;
  color:rgba(232,214,193,.75);
}

/* =========================================================
   ACCESSIBILITY
   ========================================================= */
.wlVisuallyHidden{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px){
  .wlArchiveGrid{
    grid-template-columns:1fr;
    gap:26px;
  }

  .wlIndexPanel{
    padding-top:0;
  }

  .wlRecordLinkWrap{
    justify-content:flex-start;
    padding-top:10px;
  }

  .wlNotesGrid{
    grid-template-columns:1fr;
  }

  .wlNoteItem + .wlNoteItem{
    border-left:0;
    border-top:1px solid var(--line);
  }
}

@media (max-width: 760px){
  .wlTopbarInner{
    flex-direction:column;
    gap:12px;
    padding-top:12px;
    padding-bottom:12px;
  }

  .wlNav{
    flex-wrap:wrap;
    justify-content:center;
    gap:12px 16px;
  }

  .wlNav a{
    font-size:.88rem;
  }

  .wlHeroMedia{
    min-height:62svh;
  }

  .wlHeroImage{
    height:62svh;
    min-height:380px;
  }

  .wlHeroOverlay{
    top:50%;
    width:100%;
    padding:0 18px;
  }

  .wlHeroKicker{
    font-size:.76rem;
    letter-spacing:.18em;
  }

  .wlHeroTitle{
    font-size:clamp(2.2rem, 10vw, 4rem);
    line-height:1.02;
  }

  .wlHeroDivider{
    margin:14px auto 12px;
    width:min(100%, 240px);
  }

  .wlHeroSubtitle{
    font-size:clamp(1rem, 4.6vw, 1.4rem);
  }

  .wlSection{
    padding-left:18px;
    padding-right:18px;
  }

  .wlIntro{
    padding-top:18px;
  }

  .wlIntroLead{
    font-size:clamp(1.42rem, 6vw, 2rem);
    line-height:1.8;
  }

  .wlSectionTitle{
    font-size:2.1rem;
  }

  .wlSpecimenFigure{
    padding:10px;
  }

  .wlIndexItem{
    padding:16px 0 15px;
  }

  .wlIndexItem.is-active{
    padding-left:10px;
    padding-right:10px;
  }

  .wlIndexMain{
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
  }

  .wlIndexName{
    font-size:clamp(1.45rem, 7vw, 2rem);
  }

  .wlIndexStatus{
    font-size:.88rem;
  }

  .wlIndexMeta{
    margin-top:4px;
    font-size:.95rem;
  }

  .wlRecordLink{
    font-size:1.12rem;
  }

  .wlNotes{
    padding-top:30px;
    padding-bottom:42px;
  }

  .wlNoteItem{
    padding:18px 16px 20px;
    min-height:auto;
  }

  .wlNoteTitle{
    font-size:1.8rem;
  }

  .wlNoteText{
    font-size:.96rem;
    line-height:1.75;
  }

  .wlFooterInner{
    padding:28px 18px 34px;
  }
}

@media (max-width: 480px){
  .wlBrandLogo{
    height:28px;
  }

  .wlNav{
    gap:10px 14px;
  }

  .wlNav a{
    font-size:.82rem;
  }

  .wlHeroMedia{
    min-height:58svh;
  }

  .wlHeroImage{
    height:58svh;
    min-height:340px;
  }

  .wlHeroTitle{
    font-size:clamp(2rem, 11vw, 3rem);
  }

  .wlHeroSubtitle{
    font-size:1rem;
  }

  .wlIntroLead{
    font-size:clamp(1.25rem, 6.5vw, 1.7rem);
  }

  .wlIndexName{
    font-size:1.8rem;
  }

  .wlRecordLink{
    font-size:1.02rem;
  }
}

/* =========================================================
   LIGNUM FLOATING CHAT — CLASSIC BANNER STYLE
   ========================================================= */
.lignumChatFab{
  position:fixed;
  right:20px;
  bottom:20px;
  z-index:9999;

  display:flex;
  align-items:center;
  gap:10px;

  width:auto;
  min-width:0;
  max-width:none;
  padding:8px 14px 8px 10px;

  color:#6b533f;
  text-decoration:none;

  background:#efe2ce;
  border:1px solid rgba(120, 90, 62, .22);
  border-radius:0;
  box-shadow:none;
  overflow:visible;
  isolation:auto;

  transition:opacity .18s ease, transform .18s ease;
}

.lignumChatFab::before,
.lignumChatFab::after{
  display:none;
  content:none;
}

.lignumChatFab:hover{
  transform:none;
  opacity:.9;
  border-color:rgba(120, 90, 62, .22);
  box-shadow:none;
}

.lignumChatFab:active{
  transform:none;
}

.lignumChatFab:focus-visible{
  outline:1px solid rgba(107, 83, 63, .45);
  outline-offset:3px;
}

.lignumChatFab__icon{
  flex:0 0 54px;
  width:54px;
  height:54px;
  overflow:hidden;
  border:none;
  border-radius:0;
  background:transparent;
  box-shadow:none;
}

.lignumChatFab__icon img{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
}

.lignumChatFab__text{
  display:flex;
  flex-direction:column;
  justify-content:center;
  min-width:0;
  line-height:1;
}

.lignumChatFab__eyebrow{
  margin:0 0 3px;
  color:#8a715c;
  font-family:"Cormorant Garamond","Noto Serif KR",serif;
  font-size:15px;
  font-weight:500;
  line-height:1;
  letter-spacing:.08em;
  text-transform:uppercase;
  white-space:nowrap;
}

.lignumChatFab__title{
  color:#6b533f;
  font-family:"Cormorant Garamond","Noto Serif KR",serif;
  font-size:23px;
  font-weight:500;
  line-height:1;
  letter-spacing:-.01em;
  white-space:nowrap;
}

@media (max-width:768px){
  .lignumChatFab{
    right:14px;
    bottom:14px;
    gap:8px;
    padding:7px 12px 7px 8px;
  }

  .lignumChatFab__icon{
    flex:0 0 46px;
    width:46px;
    height:46px;
  }

  .lignumChatFab__eyebrow{
    font-size:13px;
    margin-bottom:2px;
  }

  .lignumChatFab__title{
    font-size:19px;
  }
}

@media (max-width:480px){
  .lignumChatFab{
    right:10px;
    bottom:10px;
    padding:6px 10px 6px 7px;
    gap:7px;
  }

  .lignumChatFab__icon{
    flex:0 0 40px;
    width:40px;
    height:40px;
  }

  .lignumChatFab__eyebrow{
    font-size:11px;
  }

  .lignumChatFab__title{
    font-size:16px;
  }
}

@media (prefers-reduced-motion: reduce){
  .lignumChatFab{
    transition:none !important;
  }
}